Improvement in paddle-wheels



J. KAMPMAN.

PADDLE-WHEEL.

Patented Jan. 4, .1876.

h ibzesses fin.

UNITED STATES PATENT QFFIOE.

JOHN KAMPMAN, OF NEW YORK, N. Y.

IMPROVEMENT lN PADDLE-WI- IEELS.

Specification forming part of Letters Patent No. 171,818, dated January 4, 1876; application filed November 10, 1875.

To all whom it may concern:

Be it known that I, JOHN KAMPMAN, of the city, county, and State of New York, have invented a new and useful Improvement in Paddle-Wheels, and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had. to the accompan ying drawing, which forms part of this specification.

This invention relates to paddle-wheels in which the blades or buckets have their faces oblique to the axis of the wheel and planes of revolution, and in which the axis of the wheel is in transverse relation with the length of the vessel, as in the case of what are termed side wheels, although such a wheel may he arranged at the stern or other portion of the vessel, but in every instance is distinguishable from a screw-propeller in the diti'erent relation of its axis to the length of the vessel.

The invention consists in a paddle-wheel in which the blades or buckets not only have their faces oblique to the axis of the wheel and planes of revolution, but with theirobliquity in reverse directions alternately, and so that the plane of obliquity of one blade is at right angles, or thereaboii t, with the plane of the next contiguous blade, such reverse oblique constructions of the blades extending from the hub of the wheeloutward, and the blades being made rigid or'inelastic and free from torsion at their junction with the hub.

A paddle-wheel having its blades thus constructed and arranged not only provides for reducing or obviating shock when striking the water, and for lessening lift when leaving the water, but takes a firm and rigid hold upon thewater, and so that the blades strike the water in succession on opposite sides of the wheel with much better propelling etfect than I when the blades are connected with the hub ively.

A is the hub of the wheel, and B B its blades or buckets, arranged to project radially from the hub, but with their faces oblique to the axis of the wheel and planes of revolution, and with their obliquity in reverse directions alternately. This is the construction of the blades from the hub outward, and said blades, although increasing in width outwardly, are of an increasing thickness in an inward direction, as shown in Figs. 3 and 4, the former of which figures represents a transverse section of the blades at or near their outer ends, and the latter of which figures represent a transverse section of' the same at or near their junction with the hub. This construction of the blades prevents any torsion or elastic action of them at or near their junction with thehub, and gives them a firm hold upon the water.

I claim A paddle-wheel in which the blades, made consecutively of reverse obliquity,'as described, have their oblique faces arranged to extend from the hub outward, and areof increasing thickness and made rigid or inflexible at or near their junction with the hub, substantially as shown and described.

JOHN KAMPMAN. Witnesses:

MICHAEL RYAN, FRED. HAYNES. 

